The War between the States.
The War between the brothers.
I think one is war between the states.
It may be known by other names, but I have always found it referred to as the Greek Civil War.
The names are The Civil War and The War of Northern Agression.
Union and Confederates
In the US the war between the north and the south is called the Civil War. However, there have been other war, In other arts of the world, between northern regions and southern regions and they have different names.
gettysburg
Civil War War Between The States War of Southern Rebellion War of Northern Aggression
Other names for the Union were the Republic or simply the United States.
The US Civil War has also been called The War for Southern Independence, The Second American Revolution, The Late Unpleasantness, The Rebellion, War Between the States and the list goes on.
Another common name for the American Civil War was the War Between the States. For more information on the many names of the Civil War including a list of alternative names for that war, please see the Related Links.
Assuming that you mean the Civil War that took place in the United States - two alternate names are The War Between the States, and the The War of Northern Agression.
The War between the States The War between brothers